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feat(design): create
DaffSelectable host directive (#2910)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| export { DaffSelectable } from './selectable'; | ||
| export { DaffSelectableDirective } from './selectable.directive'; |
78 changes: 78 additions & 0 deletions
78
libs/design/src/core/selectable/selectable.directive.spec.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| import { | ||
| Component, | ||
| DebugElement, | ||
| } from '@angular/core'; | ||
| import { | ||
| waitForAsync, | ||
| ComponentFixture, | ||
| TestBed, | ||
| } from '@angular/core/testing'; | ||
| import { By } from '@angular/platform-browser'; | ||
|
|
||
| import { DaffSelectableDirective } from './selectable.directive'; | ||
|
|
||
| @Component({ | ||
| template: ` | ||
| <div daffSelected | ||
| (becameSelected)="becameSelectedFunction($event)" | ||
| [selected]="selected"> | ||
| </div>`, | ||
| }) | ||
|
|
||
| class WrapperComponent { | ||
| becameSelected = (val: boolean) => {}; | ||
| selected: boolean; | ||
| } | ||
|
|
||
| describe('@daffodil/design | DaffSelectableDirective', () => { | ||
| let wrapper: WrapperComponent; | ||
| let de: DebugElement; | ||
| let fixture: ComponentFixture<WrapperComponent>; | ||
| let directive: DaffSelectableDirective; | ||
|
|
||
| beforeEach(waitForAsync(() => { | ||
| TestBed.configureTestingModule({ | ||
| declarations: [ | ||
| WrapperComponent, | ||
| ], | ||
| imports: [ | ||
| DaffSelectableDirective, | ||
| ], | ||
| }) | ||
| .compileComponents(); | ||
| })); | ||
|
|
||
| beforeEach(() => { | ||
| fixture = TestBed.createComponent(WrapperComponent); | ||
| wrapper = fixture.componentInstance; | ||
| de = fixture.debugElement.query(By.css('[daffSelected]')); | ||
| directive = de.injector.get(DaffSelectableDirective); | ||
| fixture.detectChanges(); | ||
| }); | ||
|
|
||
| it('should create', () => { | ||
| expect(wrapper).toBeTruthy(); | ||
| expect(directive).toBeTruthy(); | ||
| }); | ||
|
|
||
| it('should add a class of "daff-selected" to the host element when selected is true', () => { | ||
| wrapper.selected = true; | ||
| fixture.detectChanges(); | ||
|
|
||
| expect(de.classes).toEqual(jasmine.objectContaining({ | ||
| 'daff-selected': true, | ||
| })); | ||
| }); | ||
|
|
||
| it('should not add a class of "daff-selected" to the host element when selected is false', () => { | ||
| expect(de.classes['daff-selected']).toBeUndefined(); | ||
| }); | ||
|
|
||
| it('should emit on becameSelected when select is called', () => { | ||
| spyOn(directive.becameSelected, 'emit'); | ||
| wrapper.selected = true; | ||
| directive.select(); | ||
|
|
||
| expect(directive.becameSelected.emit).toHaveBeenCalledWith(); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| import { | ||
| ChangeDetectorRef, | ||
| Directive, | ||
| EventEmitter, | ||
| HostBinding, | ||
| Input, | ||
| Output, | ||
| } from '@angular/core'; | ||
|
|
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| import { DaffSelectable } from '../selectable/selectable'; | ||
|
|
||
| @Directive({ | ||
| selector: '[daffSelected]', | ||
| standalone: true, | ||
| }) | ||
|
|
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| export class DaffSelectableDirective implements DaffSelectable { | ||
| /** Whether or not a component implementing the directive is selected */ | ||
| @Input() @HostBinding('class.daff-selected') selected = false; | ||
|
|
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| /** | ||
| * An event that fires after the media element becomes selected. | ||
| */ | ||
| @Output() becameSelected: EventEmitter<void> = new EventEmitter<void>(); | ||
|
|
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| constructor(private cd: ChangeDetectorRef) {} | ||
|
|
||
| select() { | ||
| this.selected = true; | ||
| this.becameSelected.emit(); | ||
| this.cd.markForCheck(); | ||
| return this; | ||
| } | ||
|
|
||
| deselect() { | ||
| this.selected = false; | ||
| this.cd.markForCheck(); | ||
| return this; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| /** | ||
| * An interface for giving a component the ability to display a selected UI. | ||
| * In order to be selectable, the class must implement this property. | ||
| */ | ||
| export interface DaffSelectable { | ||
| selected: boolean; | ||
| } |
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